QS:Min answers
From LimeSurvey Manual
最小回答数 (min_answers)
説明
この機能は、複数選択質問で一定数の回答を選択させる場合に使用します。
有効な値
例
If set to X (a random number), the users can submit the survey form if they select at least X checkboxes. If this option is utilised for ranking questions, this ensures that at least three items are ranked before allowing the respondent to submit the answers/survey.